中产阶级家庭与车夫签订合同，让他送孩子去学校以及接孩子放学。车夫实际上变成了一位家仆。

Middle-class families contract with a puller to take a child to school and pick him up; the puller essentially becomes a family retainer.

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一方面，蒙特利尔自行车分享系统拥有成熟的技术；另一方面，我们与各城市直接签订合同。

Public Bike System created a better technology. And we have direct contracts with the cities.

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我们经常能成功地说服企业或供应商为了研究的方便与PushToTest签订合同，并让我们在一个开源许可下发布这些研究。

Often we are successful convincing an enterprise or vendor that contracts with PushToTest for primary research to let us publish the research under an open source license.

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